Re: Proper query implementation for Postgresql driver

From: Marko Tiikkaja <marko(at)joh(dot)to>
To: Shay Rojansky <roji(at)roji(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Proper query implementation for Postgresql driver
Date: 2014-09-28 10:40:41
Message-ID: 5427E5A9.5060109@joh.to
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On 9/28/14, 11:53 AM, Shay Rojansky wrote:
> I would, in theory, love to switch the entire thing to binary and thereby
> avoid all textual parsing once and for all. If I understand correctly, this
> means all queries must be implemented as extended queries, with numerous
> extra client-server roundtrips - which are a bit hard to stomach. Section
> 49.1.2 of the manual also states that the unnamed prepared statement and
> portal are optimized for the case of executing a query only once, hinting
> that this is the proper way to do things - but this optimization still
> cannot not eliminate the extra roundtrips mentioned above (PREPARE, BIND,
> EXECUTE).

You don't have to do multiple round-trips for that; you can just send
all the messages in one go. See how e.g. libpq does it in PQexecParams().

.marko

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